Unverified80% confidenceTradeoffTime unknown
滚筒越软越安全但引导爬行/行走的支撑力越弱，宝宝推动费力；越硬支撑越好但磕碰风险增加。爬行引导期选中等偏软，站立训练选偏硬
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80%
Confidence
Long-term
Relevance
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